In this tuneful teen drama, two disparate high school students, he a street-wise Italian rebel and she a sweet naive Jewish girl, fall in love while preparing for the annual "Sing," a competition between seniors and the other grades attending Brooklyn schools. It is the caring school music teacher who involves the street-tough, for he sees tremendous talent in the youth. With the help of the teacher and the affection of the young woman, the angry youngster, mends his self-destructive ways and makes the annual musical a smashing success.
~ Sandra Brennan, All Movie Guide